Question

Find DC round to the nearest tenth

Answer 1

Explanation:

30.53

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Answer 2

42

we can use trigonometric ratios (cos, sin, tan) to solve this

`cos(54)=AD/20\\20cos(54)=AD\\AD=12\\`

Using the pythagorean theorum we see that BD is 16

now we can use tan to solve for DC

`tan(28)=16/DC\\DC=16/tan(28)\\DC=30\\30+12=42; AC=42`

Explanation: